Combine Background on Group HUD (set Group Background: On)
!Before !After
(16 Draw Calls -> 3 Draw Calls)

Set "Icon to Info Gap": 0 or lower
!Before !After
(4 Draw Calls -> 3 Draw Calls)

Set "Draw Background Rounded": False
!Before !After
(3 Draw Calls -> 1 Draw Call)

Set a Condition for your HUD to only render in a specific condition, disabling them dynamically.

Disable any HUD you rarely / never used.