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Just wanted to share this https://www.thingiverse.com/thing:4124195 HTC Vive Wireless Dual 30mm Cooling Fan. 2x - 30x30x6mm 12v Fans @ 7.5v (Low speed fan resistors I had sitting around) 1x - 1.3 ID x 3.5mm OD DC Jack This was built due to Grey/Blue screen flashes on the HMD, Falling through the world or slowly losing tracking on the Vive Cosmos during wireless play. Looking at logs in C:\ProgramData\Vive Wireless\ConnectionUtility\Log The HTC Vive Wireless would start with temps reporting [2020-01-19 17:36:58 +10 0xB70 INFO LOG] M_Temperature=36, R_Temperature=33 -After 20minutes play time- [2020-01-19 17:56:46 +10 0xB70 INFO LOG] M_Temperature=91, R_Temperature=62 After the modification was performed the log output reported [2020-01-24 14:45:39 +10 0x4394 INFO LOG] M_Temperature=30, R_Temperature=23 -After 20minutes play time- [2020-01-24 15:05:19 +10 0x4394 INFO LOG] M_Temperature=48, R_Temperature=49 Both of these were experienced with the same room temperature of 24c and 20minutes of playtime in Beat Saber. After extended use it originally used to display temperatures reporting [2020-01-07 18:19:42 +10 0x32B0 INFO LOG] M_Temperature=99, R_Temperature=63 [2020-01-07 18:19:52 +10 0x32B0 INFO LOG] M_Temperature=100, R_Temperature=65 [2020-01-07 18:20:22 +10 0x32B0 INFO LOG] M_Temperature=102, R_Temperature=66 With a grey/blue HMD flicker every few minutes. This has cut cut the temperature by half and resulted in no drop outs after hours of use. Cheers