Steps to reproduce:
1. Download and open the project
2. Open "Test_AniMatrix_InstanceIndirectAppend" scene
3. Enter playmode
-At this point, 10000 Max meshes are set, but 1000 are drawn
4. Press C to toggle the max to 1000
-Sets max to 1000 and draws 1000
5. Observe performance differences

Expected result: Performance should be roughly the same
Actual result: Performance is drastically lower when max meshes is set to 10000

Reproduced on 5.6.0b1, 5.6.0b4
Earlier versions are missing required Graphics commands

Notes:
-Pressing D outputs the current instance count with GetData() on the argeuments buffer after using CopyCount,