I have seen this with one or 2 games on the 350, but its interesting that it does it all games on the 280v. I'll have need to have a look at the frame timing code. i suspect its skipping frames when it does not need to.
Thanks for the report. There are so many games its impossible for me to test everything, so I rely on reports like this to help find compatibility issues. I've added it to the list for the next compatibility fix update.
Cool, I'll look forward to that. Would you mind If i put links to your webpage/videos on the tac08 product page? I think it would be helpful for new users setting up the emulator.
Thanks for the comments and donation. Every bit helps a great deal. It's taken a bit longer to get the PNG loading than I initially hoped it would, but it's looking good for a release before the end of the week.
Just taking the source from the BBS page is not enough, as it is not in the correct cart format and does not contain any of the assets (sprites, maps, SFX, music). Load the cart into pico8 and save the game out as a p8 text cart.
These 2 bugs are now fixed. You may need to delete progress from the games menu, in dank tomb, as it may have corrupted the save file. I'm aiming to release a new version in a few days