GTA 5 (Grand Theft Auto V) is a large, graphically intensive game originally released by Rockstar Games. "Setup.exe highly compressed" refers to distributions where the game's installer (setup.exe) or game files are packaged into a much smaller archive using aggressive compression or repacking tools so the download size is reduced.
If you see a ransom note, do not pay. Use No More Ransom Project for decryption tools. Gta 5 Setup Exe Highly Compressed
To get a working version without risking your PC's safety, follow these guidelines: GTA 5 Setup Exe Highly Compressed — Report
How to Install
Verification: Many compressed setups come with a "MD5 Verification" tool. Use it after installation to ensure no files were corrupted during decompression. GTA_5_Setup
GTA_5_Setup.exeGTA_V_Highly_Compressed_500MB.rar.exeSetup_GTA5_PC_Full.exe