- how that affects performance;
"
Well one could write "get a strong PC scrub!" and done with that part. :p
The point of my deltas post was: It's not worth chasing high FD values because of diminishing returns.
I play my favourite game on FD7 with 10% vsync offest. To get to FD8 I would need to double my CPU speed for a gain of 1.7ms
Here's something everyone can try: Can you tell the difference between say FD3 and FD7 ? If not, what's the point of trying for another step that's a quarter of that difference.
Well I consider 7 a high value.
[rant]Even if the difference between 3 and 7 is indeed placebo for a lot of players, it's different depending on perspectives just like you said.
Diminishing returns will not necessarily be how some see it.
For someone who knows he's got a bit too 'long' a total lag chain because of weaknesses in his setup (a bit laggy display, bad contoller, whatever gets in the way not attended to by the emu itself), then the ability to achieve high frame_delay is welcome if only to eliminate a mere few more miliseconds. There, placebo aside a decently powerful system is a good thing anyways.
There's good reasons to tell people to generally not cheap out too much on the hardware, you know like for instance there's a kind of 'myth' or should I say common saying, that states a salvaged, flea-market-tier weak PC is enough for doing a mamecab as long as it fits the compatibility requirements.
But in the case of Groovy some may want to aim for heavy games, use super resolutions, or in particular a flat panel.
With each requirement an increase in CPU/GPU performance is required, not much of an increase for a CRT cab, but a BIG step up for flatties.
Somewhat veteran mamecab users often when they recommend bottom end hardware, maybe only think about their own low requirements they've been satisfied with, playing mostly long-time well-performing titles in MAME.
Having myself done quite a bit of support (attempted to at the very least) this past year and a half, I can very much tell that the healthier narrative to spread around, is definitely 'favour power and performance'.
That's what Haze or Calamity have been doing for long after all, and so, I've noticed popular recommendations for setup performance ability often go against theirs.
(Also, ain't some sound emulation become much heavier along some drivers like Capcom's, Taito, and recently several 80's oldies? I did sometimes read users who had a 'just enough for the job' PC in their mamecab who went like "well sh*t, I have updated MAME and now my antique mamecab PC crawls" :/ )
I'm not telling ppl to build a high-end PC by default either. Only case would be if they would try something extreme like high frame_delay over UHD.
For instance the Vega I currently have in my PC is absolutely totally overkill for a CRT setup of course, but might be recommendable for a QHD or 4K display.
(I have only tried up to 1200p myself so I cannot tell if such GPU tier is too much or not for 4K, just speculating. All I can say is that it does better over 1080~1200 than my previous RX 570 and even more so than the older R7 260X)
I haven't met anyone asking about Groovy setup recommendations for beyond 1080 yet tho.
[/rant]TL;DR I still think it's a healthier narrative to generally recommend a decently average to strong PC for GroovyMAME, rationally depending on the kind of desired setup of course, but in any case brush aside the typical cheap bottom-end CPU/GPU recommendations that slightly out-of-date users commonly give around.
The slider is only available in Windows (well, it should appear for now in Linux, that's a mistake), and requires GM 224 at least.
Oops, thought he meant windows, that's why I gave the rolling eyes.