Dade wrote: ↑Tue Mar 20, 2018 2:49 pm
Quite better but still not the optimum, I will do some test too.
I did some test with i7 3930k (6 cores, 12 threads) + AMD R9 290X + NVIDIA GTX980 with LuxMark Hotel scene at 4961x3508. A screen refresh costs about 2 seconds so it impacts performance but not so much if you do a refresh every 600 secs.
I did some test with NVIDIA and AMD alone without hybrid rendering, CPU 100% free.
NVIDIA GTX980 at 1024x576:
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[Elapsed time: 30/0sec][Samples 100/0][Convergence 0.000000%][Avg. samples/sec 1.97M on 4973.4K tris]
NVIDIA GTX980 at 4961x3508:
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[Elapsed time: 31/0sec][Samples 1/0][Convergence 0.000000%][Avg. samples/sec 0.60M on 4973.4K tris]
AMD R9 290X at 1024x576:
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[Elapsed time: 30/0sec][Samples 120/0][Convergence 0.000000%][Avg. samples/sec 2.33M on 4973.4K tris]
AMD R9 290X at 4961x3508:
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[Elapsed time: 31/0sec][Samples 1/0][Convergence 0.000000%][Avg. samples/sec 0.97M on 4973.4K tris]
So there seems to be a performance degradation at very high resolutions with both. It is a quite strange problem, going to further investigate.