Running Win11 23H2 and Blender Octane Edition v28.10, RTX 4090 began to be rendering at 7680x4320 at 07pm UTC yesterday... but at morning I get new message of CUDA error code 700 (see image 1). But before this error, we blame many, many, many waits of 0.5 seconds per ~4 seconds (see image 2).
IMAGE 1:
IMAGE 2:
Blender Octane 28.5: CUDA error code 700 on RTX 4090
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Please add your OS and Hardware Configuration in your signature, it makes it easier for us to help you analyze problems. Example: Win 7 64 | Geforce GTX680 | i7 3770 | 16GB
Please add your OS and Hardware Configuration in your signature, it makes it easier for us to help you analyze problems. Example: Win 7 64 | Geforce GTX680 | i7 3770 | 16GB
Google Chrome, AnyDesk (computer, smartphone... remote)...), monitoring with update of 0.2sec by MSI Afterburner or other application may cause 2 images - check my past post. 

NOTE: I'm sorry for bad english due to mute 
i7-12700KF
2x16GB RAM@DDR4-3600
MSI PRO Z690-A DDR4
Zotac GF RTX 4090 <3
SSDs OCZ RD400 0.5TB and Crucial 2TB SATA3
HDD 1TB SATA2
LG BD-RE BH16NS40
PSU 1kW
CRT 19" Samtron 19"

i7-12700KF
2x16GB RAM@DDR4-3600
MSI PRO Z690-A DDR4
Zotac GF RTX 4090 <3

SSDs OCZ RD400 0.5TB and Crucial 2TB SATA3
HDD 1TB SATA2
LG BD-RE BH16NS40
PSU 1kW
CRT 19" Samtron 19"
