The Maximum Operating Temperature for your Ryzen APU is 105c: Ryzen™ 3 2200G APU with Radeon™ Vega 8 Graphics | AMD
Also make sure that the CPU Cooler (Wraith?) is installed and making proper contact with the surface of the Ryzen. From what I have read, The Wraith that comes with the Ryzen is fine for maintaining the APU within operating temperature range. The Ryzen has a TDP of 65 Watts which is not very high in comparison to other High TDP CPU/APUs.
You may want to configure BIOS settings concerning your Ryzen to run cooler or use Ryzen Master. Also, probably in BIOS, you can configure the CPU Fan to run more efficiently. https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/EX-A320M-GAMING/E13360_EX-A320M-GAMING_UM_web.pdf (Your Motherboard's Manual)
You might want to update the BIOS on your motherboard. A just added new BIOS is added at Asus Support: EX-A320M-GAMING Driver & Tools | Motherboards | ASUS Global
Version 40232018/09/148.02 MBytes
EX-A320M-GAMING BIOS 4023
1. Improve system compatibility
Version 18.104.22.1682018/08/21721.64 MBytes
AMD Chipset driver
AMD AM4 Chipset Driver V22.214.171.124 for Windows Win10 64bit. (AMD package version is V18.10.20.02, VGA driver version is V 24.20.11020.2003)
NOTICE: Due to the different structure for drivers, suggest you remove the old driver first before install this version driver.