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It's very likely you have one or more bad cells in your battery pack. To wit:

... I checked the battery pack with a volt meter and it showed 133v out of 144v system. One battery BMS was blinking so assumed it was the problem and checked it voltage and it was 2.68v...
Configured correctly, Soliton controllers will limit the amount of motor current when the pack voltage declines too much, and that is the most likely explanation for why your acceleration is so poor, but I'd need to see a log file and your settings to confirm that.
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