Windows CE OS 6.0 Lockdown memory leak

I have been working with some older handhelds trying to get them into our production environment however I have run into a snag regarding the lockdown feature. The device is an Symbol/Motorola MC3190 Gun style device running CE OS 6, we currently run the same model in prod with OS 6.5 classic with the same lockdown screen, no issues whatsoever. The OS 6 device will install the lockdown but after the install the device is running extremely slow. If allowed to sit overnight the device crashes indicating it ran out of memory and asks to close applications. A cold reboot fixes the issue temporarily but will repeat the crash if allowed to stay on kiosk mode. We use the custom navigation bar options for our lockdown configuration. If I disable the custom lockdown config on the OS 6 devices it no longer crashes and performs very well even if left to sit for extended periods of time connected to the deployment server. I have validated this crash occurs on multiple devices running CE OS 6. I was hoping someone might be able to help provide insight into this issue. Thanks