Лаг в Liphone SDK

использую в своем приложении сабж и звонки проходят как-то сильно долго. В дебаге выловил такое

2025-09-05 09:36:16.700 19558-19558             Ok message: Registration successful
2025-09-05 09:36:16.701 19558-19558 LinphoneService         debug_dmm message: Linphone core [0xb400007259f91430] notified [registration_state_changed]
2025-09-05 09:36:16.701 19558-19558 LinphoneService         debug_dmm message: Updating friend list [0xb4000070f9eeda50](_default) subscriptions
2025-09-05 09:36:16.702 19558-19558 LinphoneService         debug_dmm message: Updating friend list's [0xb4000070f9eeda50] friends subscribes
2025-09-05 09:36:16.702 19558-19558 LinphoneService         debug_dmm message: Changing [client] [REGISTER] transaction [0xb4000070f9f7bf10], from state [COMPLETED] to [TERMINATED]
2025-09-05 09:36:16.703 19558-19558 LinphoneService         debug_dmm message: Client internal REGISTER transaction [0xb4000070f9f7bf10] terminated
2025-09-05 09:36:16.703 19558-19558 LinphoneService         debug_dmm message: transaction [0xb4000070f9f7bf10]: ending transaction background task with id=[4e06].
2025-09-05 09:36:16.705 19558-19558 LinphoneService         debug_dmm message: bellesip_wake_lock_release(): Android wake lock released [ref=0x4e06]
2025-09-05 09:36:16.705 19558-19558 LinphoneService         debug_dmm message: channel [0xb4000073bfc72e10]: ending recv background task with id=[4d6a].
2025-09-05 09:36:16.707 19558-19558 LinphoneService         debug_dmm message: bellesip_wake_lock_release(): Android wake lock released [ref=0x4d6a]

2025-09-05 09:36:19.357 19558-19558 LinphoneService         debug_dmm message: [Platform Helper] [Signal Strength Monitor] Current active network type is [MOBILE](0)
2025-09-05 09:36:19.358 19558-19558 LinphoneService         debug_dmm message: [Platform Helper] [Signal Strength Monitor] LTE cell type signal is [-92] dbm, RSSI is [-81]
2025-09-05 09:36:19.364 19558-19558 LinphoneService         debug_dmm message: [Platform Helper] [Signal Strength Monitor] Current active network type is [MOBILE](0)
2025-09-05 09:36:19.365 19558-19558 LinphoneService         debug_dmm message: [Platform Helper] [Signal Strength Monitor] LTE cell type signal is [-92] dbm, RSSI is [-81]
2025-09-05 09:36:20.295 19558-19558 LinphoneService         debug_dmm message: bellesip_wake_lock_acquire(): Android wake lock [belle-sip recv channel] acquired [ref=0x4e0a]
2025-09-05 09:36:20.296 19558-19558 LinphoneService         debug_dmm message: bellesip_wake_lock_acquire(): cast long of wakelock 19978
2025-09-05 09:36:20.296 19558-19558 LinphoneService         debug_dmm message: channel [0xb4000073bfc72e10]: starting recv background task with id=[4e0a].
2025-09-05 09:36:20.297 19558-19558             INVITE

т.е. лаг после вызова bellesip_wake_lock_release()

тут лаг в 3 сек, но он может быть и 5сек и 10сек

пробовал включать/выключать STUN, TURN, ICE, сервера STUN/TURN пробовал разные, влияние на лаг в пределах статистической погрешности

до SIP сервера стучался как через инет так и из локалки, тоже особо не влияет

собственно вопрос, а что происходит после вызова bellesip_wake_lock_release() ? и как можно избежать лага ?