Psyonix just released Rocket League update 1.39. The latest patch for their competitive sports title brings with it improved performances, bug fixes, and some new community flags. You can check out all of the changes by reading the Rocket League update 1.39 patch notes.
Check out the Rocket League update 1.39 patch notes below:

CHANGES AND UPDATES
General

Improved performance when High Quality Shaders are disabled on the following maps:

Aquadome, Core 707, Starbase ARC and Urban Central

Improved CPU performance in online play when receiving physics corrections from the game server
The in-game PsyNet Party invite window now sorts friends alphabetically.

Audio

Revised certain sounds (Impacts, Wheel Effects, Car Jumping/Dodging) for local vs. non-local players to improve clarity and readability.
BUG FIXES
General

The Playlists / Find Match UI should load much more quickly than before
Competitive Leaver Penalties are no longer applied to players who quit after someone else has already left a competitive match
Replays from Urban Central that were captured before the Autumn Update will no longer cause the game to crash
Duplicate boost pads on Champion?s Field are no longer visible when using certain video settings
Fixed an issue with motion blur on Core 707 on all platforms

Xbox

Fixed an issue that caused framerate stuttering/hitching to occur and worsen over time (with V-Sync off)
Fixed multiple crashes on Xbox

PS4

Fixed a rendering issue that could rarely cause...