When Boldbeast Recorder uploads a big file (for example 20 MB) to Google Drive, it finishes almost within 2 seconds - so fast, why? Because "Google Play Services" in your phone receives and caches the file locally, then it uploads the file later itself. If "Google Play Services" fails to upload the file, it will try again by it's strategy until it succeeds.
Yesterday another user met the same problem. I checked his log files, all recording had already been received and cached by "Google Play Services". I asked him to wait some time. "Google Play Services" will upload them finally. I suggest you wait some time also and check again.