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It seems that this guy's BIOS had higher DMVT Pre-Alloc options like 512MB and 1024MB, which is not my case. I wonder if it's still technically possible to push the framebuffer settings beyond and above the BIOS' max DMVT. I'll open a new thread for this question.

Yep, this is from my BIOS dump: 0xA7544 One Of: DVMT Pre-Allocated, VarStoreInfo (VarOffset/VarName): 0xDF, VarStore: 0x2, QuestionId: 0x1DD, Size: 1, Min: 0x0, Max 0xFE, Step: 0x0 {05 91 DC 11 EF 11 DD 01 02 00 DF 00 10 10 00 FE 00} 0xA7555 Default: DefaultId: 0x0...

Good news, I was able to set framebuffer-stolenmem to AAAwAQ== (40MB) and framebuffer-fbmem = AACQAA==(24MB) which gives me a total of 64MB. This matches my DVMT Pre-Allocated that is set in BIOS. Now, that said, here's another question: can I use a combination of framebuffer-stolenmem +...

Yes, and I also tried a few combinations including 128mb for framebuffer-stolenmem but depending on the combo I either get a blank screen or a reboot during OS startup.

Got it, unfortunately in my BIOS the max value for DVMT Pre-Allocated is 64MB, which is already set. In this case I guess there isn't much I can do, is this true?

Oh wow that was fast, thanks for the quick reply. You mean setting it in the config.plist? In my BIOS the maximum DVMT Pre-Allocated is 64MB.

I've been tweaking and making progress towards improving 4k performance on my Intel UHD 620 IGPU. I was able to get DisplayPort over Thunderbolt working with my 32" 4k monitor @ 60.00Hz. At first performance was sluggish until I found out about framebuffer-unifiedmem and noticed a significant...