I measured a time to build the camera_shake.dpr project from TERRA-Engine framework in Delphi 10.2.3 and Delphi 10.3. TERRA Engine is a complex cross-platform engine, known for its cyclic unit references, and freezes in IDE.
Camera_shake.dpr project build time, Windows 32-bit platform:
Delphi 10.2.3 with IDE Fix Pack 6.3.1, Compiler Speed Pack x86 / x64 6.3.1 -- 06 min 59 sec.
Delphi 10.3 -- 06 min 33 sec.
I measured the time on my phone manually, so there may be some error.