Speed up grep usage inside bash script

I am currently working on creating a bash script that is supposed to process large log files from one of my programs. When I first started the script took around 15 seconds to complete which wasn't bad but I wanted to improve it. I implemented a queue with mkfifo and reduced the parse time to 6 seconds. I wanted to ask you guys is there any way to improve the parsing speed of the script. The current version of the script:

#!/usr/bin/env bash
# $1 is server log file
# $2 is client logs file directory

declare -A orders_array

fifo=$HOME/.fifoDate-$$
mkfifo $fifo
# Queue for time conversion
exec 5> >(exec stdbuf -o0 date -f - +%s%3N >$fifo)
exec 6 >(exec stdbuf -o0 grep -oP '[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*' >$fifo)
exec 8&5 "${line:1:26}"
    read -t 1 -u6 converted_time
    orders_array[$order_id]=$converted_time
done &7 "$line"
    read -t 1 -u8 id
    echo >&5 "${line:1:26}"
    read -t 1 -u6 converted_time
    time_diff="$(($converted_time - orders_array[$id]))"
    echo "$id -> $time_diff ms"
done  GatewayCommon::States::Executed]
[2022-12-07 07:36:18.209567] [MarketOrderTransitionsa4ec2abf-059f-4452-b503-ae58da2ce1ff] [info] [log_action] [(lambda at ../subprojects/market_session/private_include/MarketSession/MarketOrderTransitions.hpp:57:25) for event: MarketMessages::OrderExecuted]
[2022-12-07 07:36:18.209574] [MarketOrderTransitionsa4ec2abf-059f-4452-b503-ae58da2ce1ff] [info] [log_process_event] [boost::sml::v1_1_0::back::on_entry]

the id is in square brackets after MarketOrderTransitions (a4ec2abf-059f-4452-b503-ae58da2ce1ff) Client

[2022-12-07 07:38:47.545433] [twap_algohawk] [info] [] [Event received (OrderExecuted): {"MessageType":"MarketMessages::OrderExecuted","averagePrice":"49.900000","counterPartyIds":{"activeId":"dIh5wYd/S4ChqMQSKMxEgQ**","executionId":"2295","inactiveId":"","orderId":"3dOKjIoURqm8JjWERtInkw**"},"cumulativeQuantity":"1200.000000","executedPrice":"49.900000","executedQuantity":"1200.000000","executionStatus":"Executed","instrument":[["Symbol","5"],["Isin","5"],["SecurityIDSource","4"],["Mic","MARS"]],"lastFillMarket":"MARS","leavesQuantity":"0.000000","marketSendTime":"07:38:31.972000000","orderId":"a4ec2abf-059f-4452-b503-ae58da2ce1ff","orderPrice":"49.900000","orderQuantity":"1200.000000","propagationData":[],"reportId":"Qx2k73f7QqCqcT0LTEJIXQ**","side":"Buy","sideDetails":"Unknown","transactionTime":"00:00:00.000000000"}]

The id in the client log is inside orderId tag (there is 2 of them and I use the second one) The wanted output is:

98ddcfca-d838-4e49-8f10-b9f780a27470 -> 854 ms
5a266ca4-67c6-4482-9068-788a3520b2f3 -> 18 ms
2e8d28de-eac0-4776-85ab-c75d9719b7c6 -> 58950 ms
409034eb-4e55-4e39-901a-eba770d497c0 -> 56172 ms
5b1dc7e8-fae0-43d2-86ea-d3df4dbe810b -> 52505 ms
5249ac24-39d2-40f5-8adf-dcf0410aebb5 -> 17446 ms
bef18cb3-8cef-4d8a-b244-47fed82f21ea -> 1691 ms
7c53c950-23fd-497e-a011-c07363d5fe02 -> 18194 ms

I am in particular concerned only about the "order executed" messages in the log files