Apparently v1.81 doesn't come bundled with Prometheus ME631... I found out almost a week later, lol.
While God of War - Ghost of Sparta DOES work with Prometheus 0.5
(which can be found in earlier versions of ISO Tool and also in 5.XX Prome-2, if I'm not mistaken), using ME631 I can see an obvious improvement on 5.00 M33-6.
Side note: some users have reported sluggish movies (such as the intro movie, etc) on 5.50 GEN-D3 and by looking at ME631, it comes with a lot more files than previous versions (mpeg.prx, libmp4.prx, etc) so that could explain it. The suggested action would be to use ME631 which, IMO, is definitely better than 0.5. At least for this particular game. Better framerates too.
You can either get
Prometheus ME631 and dump the contents in the '/DATA/prometheus/ME631' folder, or get it from the attachement bellow.
I also took the liberty of changing the XMB title into something more visually appealing ("ISO Tool 1.81 + Prometheus ME631"), which, of course you can change it yourself using
PSP Brew 0.91 if you want a more DIY approach. Just don't rename the folder that way. If it's too long the PSP will see it as corrupt. Keep it short.
Install notes: Copy the "ISO Tool 1.81 + ME631" folder in "X:\PSP\Game" and run it from the XMB.
Usage: Select the game, EBOOT decrypt, No, Yes, Yes. Select the game, "Patch.", Patch Prometheus, ME631. Done.
DSpider Wrote: [ -> ]Apparently v1.81 doesn't come bundled with Prometheus ME631... I found out almost a week later, lol...
Thanks for the heads up DSpider

Quote:While God of War - Ghost of Sparta DOES work with Prometheus 0.5 (which can be found in earlier versions of ISO Tool and also in 5.XX Prome-2, if I'm not mistaken), using ME631 I can see an obvious improvement on 5.00 M33-6.
Side note: some users have reported sluggish movies (such as the intro movie, etc) on 5.50 GEN-D3 and by looking at ME631, it comes with a lot more files than previous versions (mpeg.prx, libmp4.prx, etc) so that could explain it. The suggested action would be to use ME631 which, IMO, is definitely better than 0.5. At least for this particular game. Better framerates too.
this is so true. when I've patched God Of War with prometheus 0.5 the game lag like hell. after that I've patched with Me631 and game works like a charm