AndreyPatseiko commented on issue #17302:
URL: https://github.com/apache/echarts/issues/17302#issuecomment-1785377067

   Have the same problems, when I want to render around 20_000 items.
   Also when I tried filter chart by visual map, rerender also take so slow.
   Simple example for reproduce 
https://echarts.apache.org/examples/en/editor.html?c=heatmap-large&code=DYUwLgBAdg9glgZxBAvBA5uAcvJAJEYABxACcAKASgG4AoUSADwBEBDMV1CAbQF06GEAJ5sOXPnViIQAOiQgAJuQCy7ABYzSrKApgBbKjVoAzAK5QAxmDgwoGEFDLsQo1uTBrwrADQQ9cKF89VkZKCABvWggIQQV2TjQJKIhjGFIIckE4LgAGaghsgB40ACYANhy8goBqarDI6OjU9MzwCAArXPzO4ogARkru2vrkxogAenGYtsYucmDZgFo_ALCAKgKJiBLKiGqVqDox6MnpyCE5hYhl_yh1jq2BnL2Do-O4jhkiUwQ1cm44L52r4pEgvmRgAESuRslMACw5IFbHZhfY5GQAVl4RmOEymH1YXx-fwBQJBaWCwGYiDA7k8HF8oQgG1gpEp1IQtI8Xl8Qko2Le0QAvqMICx4kTfjCcRARU00hlBJ00FUev1Bh1hhFRSIJd8pe0ZXKIKRwKZSHYCXQRbF4lxMI4tGAXPFyCVfIsMb4MUYYERrLYuA0IGAYDBgNYiAAuCJC7zJRgAQUYiBjweiYCEJBjAHILM50GkhDn42MCTHxRxknHkkJk6ntWNM9mIHmC0WS6Ly8JXNXSxAAG6IUysYCqaONxq3GOI0ULGN9fvRfPACymYCsABGoBjYFIphAS5NIFH1j0IBjxlHSCPAQAStpMGnRcvw2kY9wX40cwBiADMfR_mUACcGKdri0S_nCGIAOwYpucLgRBv4wXCrAKAofRIbiv5bgowEgMB2HHL-IA5MYf7GAAHMRYy_sYDHGJuxi0d-P7GCAZHATkrGQexcQgGUWFHnR7FwmUChwn-vGtj-CgwX-OQlDBMm4RilTlDmX68KKxo1tESCkHAIAIB-orpo0UCsOeuYAOKsD8CBwNorHNherae
 
OwwREKx3YEiJEAgHoRBqKwTmmZOuJwM6egAMqZjukUQZuaQKGQADCb6kLm_5_tJAVjClpBpaQADqcAKB4C5fsKX76ccRCkDA6CmggTkDu5Tyzri2hwMEAZQJe14gLpyQ6UKdCTFN00zbNc3zQti1LYttCnCQpCQnYoLIJ4xBkCkTV6BAahgGARCmZM6DRWopibjIFj6OM7QwEgIXoOM23tAgq3Lb9f3_QD00mOYVg2HYmBgDg0gEHtFAjMuG5tRAtlaAoSUPVAnL7lYaTkIwvK-AAXvDxweIgMizGgjCCo0ZMIDIFxoEINMZmo5OE1whM08a0S6GA0L48IJNjKaYDmnYdMU8yYovJLFwbMzo1ljAYB_njBMQMTSXRKL4shmz9OzBssz7HL0sXKbBsyBzGxc0rsrJBjnIYKjf7iKKjgAO7I6j5CLv0vg5JQR5ez76HkIs_v-0HIcgN7KPh_7keB8HHtx2HSjJ9c0ep2MocJ0o0e-H0ueWenBcR0X_Sl9E-e-1Xkc19A5e-1niLZ03dfh-3Uedy33cer3sfx77PeD33I8D9n49jW8TuQEQ7tjH0GJRxUxd_jBvjAf73HF16_QARvvg7LvB_AWU3p_sXwFwifeW-Fv2wlAffQIkeQHFzk18QIpvggcXOE7oIBUW3sBXwm8T7v22FHduJQf59D3hAS-_Q4SgO2HCJ-fQdhHngXfCAcFA4nxQYgp-ZRgG3xPhiYBJREEn2_sXPoT8_yv39n-YBsFi4wWYdfUUVF0HwKwXCcBEAMQoKolg1C9Di4vw3iQmCa90FlHQUwg-Uj-hlDUYuUUgF8GAREWgk-WCygoO4YAkhGIBFHxAQgvo_sSglBEdg4B68YFRwfqKeBcCcHqnPsAuE_sMQH3ElA4JcC4R6KUoAn-GJ8GaKof_BBQkjz2L6OI9uCl6EiJgiQ9hxcJH0PQVRJxKiAHbEqDfXJr8_46LSfklRGIRFURIWUSJPcchOOAiozJ_R
 
mkQP_vg6hJ8mEn3KFQ7qjRsF6Pgd6ehwC_wqMwYwlRYzthBN8FRYBVED60JoTkJ-OwUGNNGVvUUSyNHem6fk4BfRikn3QUA0ZCCqIIJgnAwCjCRElEMf0IZ2xfARJSbE4uZQf5vNGVHDECCciQtfmUJ-UkuEUJkV8-ZXyoU323qAnROQVEDEfk4j5z98HwJuTBFR2zGE3JyCS25UCUHAQOSUARq8IF308Y8_owEf7wIEfi1B0yb5Rxgk48hUD_ZUUCVHaC98dnCMAbgv8Tj9kAs6TQt-ECo6SpvsqixWCqL4INfQvROTGGv1oUedSALzUIv3nA4Fh8rEoJ2OfHlDjGFxIOV8_BMEaGIp0QEmRKjQKPyUc6le_9IUkKojkWeyRTgABUYDHj0DADq-tkCOEUCkBUAQ0qzE9loIgRAAjoF8LoW6oAM0QHWnoUwHABohi3FW0AUB0AeGSIIWtXBQ6JlIFoIQ5BV4lBlIIFq6EAAKPb059oHUO7BMpE0GwKAgKAOZICcA6qQC4hYYBo3kAoUtKQQYDV8JuetBRICezSAAawQBAGAN6ZAQAAJKQAQKYYtaQwD3pKAAPTSfG_EcAGJkAcO-ziaMByjgPPTCApUjLOggAgfQ4A2ZtogJucAzp0ggeEDAUwzds2ptNMhyD9NkhmEsI2g95AD3CwKMYDIB6IAAD4IDPAAGScbI9mwo1dtZ4ggLFFcyBuS8bRgRsAX4WNrDQJoqFZRuaihY2gVQHgZDGGAGGCg9GaZ4bo5BiA_GX5lAYwZIzAAfNALHCj8aospsYzRFRtGyCqfIRQ1lKZqHUQTggBws0YxkbIPGS6CeiAOLgRAAS8AgH-5jRmeMvx9IFoUgVgBIHC4OKLMW4sZEM9m1j7GqJhCS0EmUYweaNFrbltANXsj7FM7FtAAWvzjoUBO2rLtJ0AheE1-0rtuCRYAKT9BKPwe2xpaNBzeKcH8835sQAnRCAI0BcDIE5KYBilGT1gxSO
 
hEA7gGO6wtCGaWkANgXYyFd9w0syjXF-aidURodvUb26AUgRByA-Ew74MAx2zSnb9g9_70tOCm2lpuN4xpTglGYEtlbdgoZIFe6DQM61NoC15Ax04AAxPNEBzDRRdhVCAFhCDADJ7YDgAQj1EHgFAaTYxBAAA0uDqY0FpnTeMm7RAAJrs_UJp7TuM-Q01OLZNopoNzWHTYwC4D1UoBGcPemATH6cBCvddVbHh2Bk4p6KSmMtlgs5pozYQD2-fi6mAh1gi9xOa5AJgdI5PgAZYgHr5LzHKQfYKIzp3-11o2DRvmOwWG_d7j3aYcnaNPCmkoKKNnaA2dlYxDTAXaABep-txAdKo41wy8zetqnjOjLnoGve4wh1AqsAsGoB9THxOpHNFTi0ZBvrM7aFAXYaB2udbZ_sGrfPeC8BkHzLHQsaaCG730AbPWB81rIHobgAv9h9BH2PlWE-LjLBLlPrvAw58de4Av2fg-l8r43-PvGD3_Zi9FNPuxR_-8vDP4vtkK_X9X63zf3fvJb8VZCaZTBT1piaeD7ZpRk7mjprQbAAHg5rpCMAP5tCEZoBXhpQ8454vr-6fbhjODVrN7pCtTrg_qignZ2AfZfaUHkDd7txQD8qmDBzTCfY0Ewogh2K-CMG-DoGHZ8gvY6yA52AWQHpHgY5QjVjWhAA
   


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