canbus logging dropping logs?

Hi,

Have the ovms v3 and wanted to capture canbus logs for my I-Miev to hopefully find ways to control the car remotely -- I know it's not been done, but going to try :)

When doing a full can bus log, such as

can log start vfs crtd /sd/canLog.crtd 

I see very high amount of discards (50+%). Ofcourse when I filter to a specific pid I do not get discards. Since I don't know which pids I am looking for, I need them all tho :) 

Performance tweaks:

• If I set vehicle module to none, I no longer see any can bus traffic. Even tho can list shows can 1 active. 
• Increasing the queue to 200 makes no noticeable improvement.
• Increasing the freq of the sd card causes it to just in general have write issues, I normally keep it at 16k. 

Before buying a dedicated can bus logger (CLX2000 or equiv) or a new SD card, thought i'd ask here. Is it possible to get 100% success on can logging of all pids? For the purpose of reverse engineering, or is that use case better to buy a dedicated unit? Is the OVMS better suited when you can filter specific pids? 

(On a side note; unsure if the cause. But after trying to do can bus logging with vehicle module none (key ready), I eventually noticed the dashboard was very funky -- empty fuel gauge, range, etc. Anti skid, traction control disabled, etc. Disconnecting OBD and restarting the car with removing the ckey caused the SoH to go from 62% to 92%, and range from 75km to 115km and go into ready state. Not sure how or what, but seemingly I triggerd some sort of reset. Unfortunately a couple on/off with keys and the SoH returned to 62% :( Not sure if changing to Vehicle Module None triggered this or something else I was doing. )