Hi NWSpacek - I’m sorry you might have to close your game for this reason. Please let us know if you are having problems with the migration.

Regarding the prior notice: We announced this numerous times over the last year or so, including these posts from last August and November. I strongly recommend reviewing them for important information you may have missed.

Physics: Deprecating the legacy spring physics solver Public Updates and Announcements Update As of 5:40 PM PST September 12th we’ve switched control over to TemporaryLegacyPhysicsSolverOverride to select which solver is being used. If TemporaryLegacyPhysicsSolverOverride is not enabled your games will be using PGS. This takes effect when servers or Studio starts up. Original Post Hey All, We are in the process of disabling and removing the legacy spring solver from the Roblox physics engine, and transitioning exclusively to the PGS solver (for more information on the PGS sol…

Moving All Games to PGS Solver on March 4th, 2019 Public Updates and Announcements We are switching all Roblox games to use the PGS solver on March 4th, 2019 Currently, games owners can set the Workspace property TemporaryLegacyPhysicsSolverOverride to True to use the legacy spring solver. However, on March 4th, 2019 this will no longer be the case, and all games will be switched over to the PGS solver for physics simulation. Over the last year, we have reached out to the developer community to discuss why we are doing this and to give everyone a chance to modify their model…