Cpu should be alright, although... only 4.2Ghz?
When I had it for my GroovyMAME box, I had mine hitting 4.8Ghz with two cores and 5Ghz on one core.
You must have been really unlucky with the silicon lottery :/
Do you mean that the CPU should be alright even at 4.2ghz or that I should o'c it even more to be good enough? I'm not sure it'll be safe if I do it with mine, which I got second hand after reading here it was good for Mame, though not in a recent post.
When this happens to me it's usually because I've set the config to somehow not use any hardware video acceleration so the CPU is doing all the upscaling.
Well, I'm testing without any scaling involved, or so I hope. I'm using a CRT and the native resolution. Unless you mean the card config? I haven't even installed anything aside from Emu Driver, so other than Windows resolution manager, I can't tweak much.
Anyway, here's a log.
Average speed: 99.94% (59 seconds)I used Truxton as it's likely the one I get more speed fluctuations with. To make sure it has nothing to do with scaling, I set the native 3:4 resolution and orientation. This is with frame delay at 2, but it doesn't matter if it's at 1 or at 7 as I mentioned. With this game, I also get speed fluctuations according to Mame's display with frame delay at 0, though a bit less.
Aside from adding some resolutions when launching VideoModeMaker, I followed the guides without touching mame.ini much. The log says also this though:
Direct3D: HLSL initialized and I have hlsl_enable at 0, not sure if that's normal?
-With Groovymame 0260 from the github, in case the log isn't noting this.-