It seems computer freeze due Firefox HW Acceleration is common problem and may present on macOS, Win and Linux. Also seems it may happened due multiple sources, like bugs in specific GPU driver, OS version, Firefox version and even browser extensions. So it is not surprise that problem happened on my legacy 10.14.6 hackintosh system with GPU that was formally not supported at all (Radeon Pro VII flashed with Radeon VII bios). But i am still interested to fix this problem because things works smoother when HW acceleration is enabled.
One of the possible problem fixes is to increase lowest clock speed I done some unsuccessful tests:
Test 1. Set FreqTableGFX1,2,3,4,5,6,7,8,9,Max clocks to same 1801 value and min/max voltages to same value (1000mV) as well.
Result: Fan spins very very fast, LuxBall test 25000 instead of 50000
Test 2. Set FreqTableGFX1 to same value as FreqTableGFX2 (808), min/max voltages to same value (1000mV)
Result: OpenCore bootloader starts, but then screen flashes with artifacts and macOS can't boot.
Test 3. Set Max Core Clock to 700.
Result: LuxBall test 50000, seems Max Core Clock value don't decrease performance.
So i have a question. Is there some manual or explanation for relation between Max Core Clock, and FreqTableGFX1,2,3,4,5,6,7,8,9, and maybe to some hardcoded values in OS for this card? Same question about HBM clocks. Where those values for FreqTableGFX came from?
P.S. Currently i got stable performance with default clock 1801MHz and 981mV. Hotspot temp still 90-93. LuxBall near 52000
One of the possible problem fixes is to increase lowest clock speed I done some unsuccessful tests:
Test 1. Set FreqTableGFX1,2,3,4,5,6,7,8,9,Max clocks to same 1801 value and min/max voltages to same value (1000mV) as well.
Result: Fan spins very very fast, LuxBall test 25000 instead of 50000
Test 2. Set FreqTableGFX1 to same value as FreqTableGFX2 (808), min/max voltages to same value (1000mV)
Result: OpenCore bootloader starts, but then screen flashes with artifacts and macOS can't boot.
Test 3. Set Max Core Clock to 700.
Result: LuxBall test 50000, seems Max Core Clock value don't decrease performance.
So i have a question. Is there some manual or explanation for relation between Max Core Clock, and FreqTableGFX1,2,3,4,5,6,7,8,9, and maybe to some hardcoded values in OS for this card? Same question about HBM clocks. Where those values for FreqTableGFX came from?
P.S. Currently i got stable performance with default clock 1801MHz and 981mV. Hotspot temp still 90-93. LuxBall near 52000
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