Zenfone 5z sound issue after latest update.

Please tell us some basic information before asking for help:

1. Model Name: ASUS_Z01RD
2. Firmware Version: QKQ1.191008.001
3. Rooted or not: No
4. Frequency of Occurrence:
5. APP Name & APP Version (If your issue relates to the app):

In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.

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After latest May security patch update. Am getting sound issues like distortion in mid levels and bass punch is gone am not getting that pump in bass and instead of that am getting muffling and thrilled bass now... and when I increase the volume bass fades away.... Please fix this issue as soon as possible... I mostly use this phone for its best sound quality it's dts x is best in class... I usually for play songs in my car through bluetooth and now don't even feel like connecting it to my car as it's totally Destroying all the sound I use to get.... Only trebles are good... Mids and lows are destroyed....please fix this issue as soon as possible... It's a priority request...