Stock JlSpp drivers often ship with a small aluminum heatsink and no fan. Under load, temperatures can skyrocket to 100°C+, causing the over-temperature protection (OTP) to kick in and ruin your print or cut.
The checkered flag waved. The silence was broken not by the usual polite applause, but by a roar from the grandstands. The mechanics in the tiny Koumo garage were hugging, crying, and pounding the table. jlspp driver better