Audio burst/cracking when stopping playback in TGuitar instrument track

I’m experiencing a cracking problem when I stop the playback of a HalionSonic Collection TGuitar instrument track. My CPU indicator goes up along for a second and the red indicator ends up lighting on. Has anyone experienced this problem with TGuitar (made by Acousticsamples, but sold by Steinberg). Is there something in the Options tab of Halion that I should set-up?

Thanks for your help!

My system:
Asus ProArt StudioBook Pro 17 (W700G3T), Intel® Xeon® E-2276M processor; 32GB Ram, 2TB (PCIe® NVMe Gen 3 x4, M.2 SSD x 2); NVIDIA® Quadro® RTX 3000 Max-Q 6GB GDDR6 VRAM; Sabrent Rocket XTRM-Q Thunderbolt 250G External SSD; Steinberg UR-RT 4 Audio Interface; Cubase Pro 13 Pro; Windows Pro 11; Dorico Pro 5; Spectralayers Pro 10; Spectrasonics Keyscape; Kawai MP-10; Nektar Panorama T4; Roland GR-1.