Windows can only sleep using a resolution of 0.5 msec. This led to discovering that the OS wait (NtWaitForKeyedEvent) was not microsecond accurate. After finding that Linux did not have this issue, he used Microsoft Concurrency Visualizer and found that the game was spending a lot of time waiting on conditional variables (cond_variable::imp_wait). Shortly after, Pauls-gh looked into a long standing issue with Tales of Vesperia where character animations would play in slow motion. This led to adding the open source Vulkan Memory Allocator library, with this library Tales of Vesperia sees a performance improvement of up to 100%. He then found that Vulkan video memory allocations were very slow. Pauls-gh discovered that Tales of Vesperia was bottlenecked by the GPU in certain areas and went on to profile the code. The Vulkan improvement leads straight to the separate case where Linux exposes a Windows platform bug.
#PS3 EMULATOR MAC 2018 CODE#
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