Author Topic: Game Kiddy GKD350H Handheld Game Console Release  (Read 3948 times)

indask8

  • Posts: 73
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #20 on: January 25, 2020, 06:31:26 pm »
One weird thing about the GKD350H is that it comes (or at least mine did) with freedoom (oda_freedoom.opk) preinstalled...

Except it doesn't work, it seem to load but crashes...

Is there a way to make it work ?

Nothing urgent, I can play it on my RG350 if I want, I just wonder why it's included if it crashes.

I'm on firmware build date Dec 1 2019
GK350H-20191211-v026
Firmware on github seem to be older... from november.

gameblabla

  • Posts: 1331
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #21 on: January 25, 2020, 08:41:37 pm »
Been having some issues with performance in ReGBA, but also less noticeably in PocketSNES and Fceux on this handheld.  Basically, even though the FPS counter is a constant 59/59 and it has fluid motion on screen, it will transition back and forth between 60fps and what appears to be 30fps.  The slowdown is most apparent in ReGBA and maybe 30% of the time in PocketSNES, especially when first starting a game.

I've tried various settings in the emulator, boosting the CPU to Level 5, and putting the ROM on the internal SD.  Does this performance seem normal?
Seems like the two emulators are using double buffering instead and that could cause it to drop from 60 fps to 30 fps if there's a small performance drop. Or maybe the GKD350H has an improper implementation of Triple buffering in the kernel ? It does seem like it.
My VBA Next port by comparison does not use double/triple buffering.

Quote
Thanks for letting me know about VBA Next -- I didn't realize that was for GBA.  The performance is definitely better than ReGBA, but, the dreaded slowdown still occurs, but much less frequently.  The built-in homebrew games and PSX emulation work perfectly, so I can't quite understand why the 2D emulation performance is problematic.
It is probably not related to CPU performance but more to do with the video refresh.
As for VBA Next slowing down in some games, it's mostly noticeable in NES classic but as you can video in my 350H video, it does not slow down in Sonic Advance 2 and Steel Empire. I would suggest to overclock it for heavy games. (the performance level thing set to the max)

chubbypika

  • Posts: 6
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #22 on: January 26, 2020, 10:39:32 am »
Quote
Thanks for letting me know about VBA Next -- I didn't realize that was for GBA.  The performance is definitely better than ReGBA, but, the dreaded slowdown still occurs, but much less frequently.  The built-in homebrew games and PSX emulation work perfectly, so I can't quite understand why the 2D emulation performance is problematic.
It is probably not related to CPU performance but more to do with the video refresh.
As for VBA Next slowing down in some games, it's mostly noticeable in NES classic but as you can video in my 350H video, it does not slow down in Sonic Advance 2 and Steel Empire. I would suggest to overclock it for heavy games. (the performance level thing set to the max)

For my testing I am using Super Mario Advance 4 since it's a slower side scroller which makes it easy to detect any slowdown.  Sonic Advance 2 also exhibits the slowdown but because of the speed it's harder to detect.  I do think I notice it in your video about 1/4 of the way through your Sonic clip.  I'd suggest trying Super Mario Advance 4 and see if you notice the slowdown after playing a level or two.  I didn't notice any slowdown in Steel Empire.

I also tried setting the CPU Level to 7 and played both GBA emulators, but neither appeared to improve (with regards to this issue).

And, thanks for taking the time to help!

brandonditto

  • Posts: 2
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #23 on: January 30, 2020, 06:34:46 pm »
I just received the device (grey). So far I love it! Feels great in my hands. It's my favorite since the CAANOO. Nothing has really satisfied since then for me. CAANOO had it's issues, but it still looked phenomenal and felt great to play. GKD350H has an incredible screen. Extremely bright at max setting. Very colorful. Great viewing angles. It's true 320x240. People say the LDK's are 320x240, but that is definitely not the native resolution of the display. the GKD350H also has a great d-pad in it's operation and placement. So for the best d-pad I've tried on one of these Chinese handhelds.

I've noticed issues with the GKD350H though that are disappointing. As someone else stated already; I was confused when the GBA and SNES emulators appear to slow down to 30 fps even though the FPS within the emulators are still at max. I hope this issue gets fixed. I'll have to try gameblabla's OPKs. I also notice when navigating through OpenDingux, it will momentarily freeze for maybe 2 - 3 seconds. My button presses are still queued up and each press executes quickly when it unfreezes.

I'm impressed by CPS3 emulation with the "fixed" FBA opk. Setting to CPU to level 7 it can run at full speed. For me, I love IGS PGM arcade games too. It seems the "fixed" FBA opk actually runs those games a little worse. The built-in FBA runs Demon Front at near full speed, which is still pretty awesome. Unfortunately, another PGM game, Spectral Vs. Generation, is around 30-50 fps in both FBAs.

chubbypika

  • Posts: 6
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #24 on: February 06, 2020, 04:17:15 pm »
I've tested a few different scenarios to get a better idea of what is happening with the ReGBA emulator.  In short, never open ReGBA's menu (Select + Start).  Doing so will almost certainly introduce intermittent slowdown unrelated to FPS.  This happens for me consistently.

brandonditto

  • Posts: 2
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #25 on: February 13, 2020, 10:54:41 pm »
Thanks for the tip! I noticed sometimes ReGBA ran better, but didn't know why.

chubbypika

  • Posts: 6
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #26 on: February 14, 2020, 09:41:47 am »
The 'Normatt' BIOS in ReGBA was causing the performance issue after opening the menu.  If you use the official BIOS the performance hit is gone.

1876

  • Posts: 17
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #27 on: February 16, 2020, 11:35:45 am »
Thank you, gameblabla for the review. It is a very informative and helpful read. Hopefully, I'll receive my own unit soon.

However, the RG-350 has better analog sticks than the GKD350. My analog stick on mine was spinning around itself out of the box...

How severe problem was this, I mean, was it easy to fix the spinning/drifting issue without taking the device apart?

Also, a huge thank you for all the programmes/apps you're making for our beloved handhelds and your helpfulness in general, it is much appreciated. :)

1876

  • Posts: 17
Re: Game Kiddy GKD350H Handheld Game Console Release
« Reply #28 on: February 19, 2020, 03:51:06 pm »
Just received mine. No problems with the analogue stick here.